The first half of the sentence you quoted is "even if you do everything right". What is the point of selectively quoting like that and then responding to something you know they didn't mean?
The way I read his post is that categorizing and differentiating is fundamentally not possible, because sensory input cannot be trusted, period. This makes sense to me because part of what can drive you mad is the constant questioning, so one way to short-circuit this is to simply not play the game.
It's zero trust networking for your brain, and you're asking "but how do you decide which ip addresses are safe?". That's the neat part, you don't.
Thanks for posting this. I had seen beartype several years ago but I don't believe it had the whole-module registration feature yet. I'm looking forward to trying both of the libraries since the ergonomics are better than decorating every function individually.
(I'm a huge nicegui fan + contributor + I build tools and libraries for it)